This comprehensive Komatsu 125-3 Series Diesel Engine Factory Service Repair Manual provides detailed instructions and illustrations for maintaining and repairing your engine. The manual covers a wide range of topics, including engine identification, general precautions, disassembly and assembly, maintenance checklists, check and maintenance procedures, special tools, engine body, fuel system, troubleshooting, servicing specifications, tightening torques, disassembling and servicing, cooling system, exhaust system, fuel filter, electrical system, alternator, regulator, and wiring diagrams.

The manual is designed for mechanics and technicians with varying levels of experience. It includes detailed substeps expanding on repair procedure information, notes, cautions and warnings to pinpoint critical information, numbered instructions guiding you through every repair procedure step by step, bold figure numbers for easy matching of illustrations with instructions, detailed illustrations, drawings, and photos for clear guidance, enlarged insets for detailed examination of parts, and a numbered table of contents for quick access to the information you need. This manual also features a troubleshooting guide to assist you in diagnosing and correcting any problems related to your engine.

With this manual, you can confidently perform a wide range of maintenance and repair tasks on your Komatsu 125-3 Series Diesel Engine. You can also save on potentially costly shop labor by performing the work yourself, giving you the knowledge and tools to keep your engine running smoothly.

The Komatsu 125-3 Series Factory Service Repair Manual is a comprehensive technical document designed specifically for technicians and mechanics working on Komatsu's 125-3 Series engines. This manual provides detailed information and instructions for troubleshooting, repairing, and maintaining these engines, essential for ensuring optimal performance and longevity. The 125-3 Series encompasses a range of powerful and reliable diesel engines manufactured by Komatsu, renowned for their use in various heavy machinery and equipment, including excavators, loaders, bulldozers, and more. These engines are known for their robust construction, exceptional durability, and high power output, making them a preferred choice in demanding construction, mining, and industrial applications. The manual covers a wide array of topics, from engine specifications and component identification to detailed repair procedures, electrical schematics, and troubleshooting guides. It also includes valuable information on safety precautions, proper tool usage, and recommended maintenance schedules.

The Komatsu 125-3 Series Factory Service Repair Manual is an indispensable resource for anyone involved in the repair and maintenance of these engines. Its comprehensive nature and detailed instructions make it an invaluable tool for professionals seeking to maintain the high performance and efficiency of Komatsu 125-3 Series engines. Accessing this manual allows users to identify and resolve issues quickly and effectively, ultimately contributing to the smooth operation of the equipment they power. Whether it's a routine inspection, a complex repair, or a component replacement, the manual provides the necessary guidance and information to ensure that the work is completed correctly and safely. By investing in this manual, professionals can enhance their knowledge and expertise, leading to improved productivity, reduced downtime, and increased efficiency in their operations.